Found in a 90s Radio Electronics, this circuit can supply currents of a few amps, according to the power transistor. The power transistor must be equipped with a heat sink.
The figure shows how to obtain a locking relay for an alarm circuit with sensors in series and in...
Found in Popular Electronics from 1969, this circuit uses a neon lamp from the time that had...
This is a simple rheostat circuit for motor control that works with voltages from 6 to 12 V. The...